Frequencies for first 10,000 rows of p2 variable in miper dataset :

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,152       61.52       61.52
          1 |         37        0.37       61.89
          2 |         79        0.79       62.68
          3 |         72        0.72       63.40
          4 |         68        0.68       64.08
          5 |         92        0.92       65.00
          6 |         99        0.99       65.99
          7 |        119        1.19       67.18
          8 |        138        1.38       68.56
          9 |        152        1.52       70.08
         10 |        141        1.41       71.49
         11 |        196        1.96       73.45
         12 |        190        1.90       75.35
         13 |        179        1.79       77.14
         14 |        165        1.65       78.79
         15 |        195        1.95       80.74
         16 |        175        1.75       82.49
         17 |        197        1.97       84.46
         18 |        171        1.71       86.17
         19 |        167        1.67       87.84
         20 |        158        1.58       89.42
         21 |        148        1.48       90.90
         22 |        137        1.37       92.27
         23 |        127        1.27       93.54
         24 |         86        0.86       94.40
         25 |         93        0.93       95.33
         26 |         80        0.80       96.13
         27 |         67        0.67       96.80
         28 |         51        0.51       97.31
         29 |         38        0.38       97.69
         30 |         48        0.48       98.17
         31 |         38        0.38       98.55
         32 |         24        0.24       98.79
         33 |         22        0.22       99.01
         34 |         11        0.11       99.12
         35 |         22        0.22       99.34
         36 |          7        0.07       99.41
         37 |          6        0.06       99.47
         38 |         15        0.15       99.62
         39 |          8        0.08       99.70
         40 |          6        0.06       99.76
         41 |          5        0.05       99.81
         42 |          3        0.03       99.84
         43 |          1        0.01       99.85
         44 |          2        0.02       99.87
         45 |          3        0.03       99.90
         46 |          1        0.01       99.91
         47 |          2        0.02       99.93
         48 |          3        0.03       99.96
         50 |          2        0.02       99.98
         52 |          1        0.01       99.99
         56 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016